Fire-door.



Patented June 18, 1912.

vu.. 9 1 l l, s am N U IBA u? E ODM 2||||| CEF .EN EPO .n Z7 T A 7 0 I LP P A ,11311/111111 111111111111151111111111l111111111/1111111/111151/11111511111111111111?911 1 1F11! l NIE STTHOMAS E. COLLINS, OF CHICAGO, ILLINOIS.

FIRE-DOOR.

Specification of Letters Patent.

Patented J une 18, 1912.

Application filed August 1, 1910. Serial No. 574,861.

To all whom t may concern Be it known that I, THOMAS E. COLLINS, acitizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented a new and useful Improvement inFire-Doors, of which the following is a specification.

My invention relates particularly to rolling shutters employed aslire-shutters; and my primary object is to provide means for use inconnection with rolling shutters or fire-resisting curtains, to preventthe passage of sparks and flames through or around the hood or housing,which contains the roller or drum.

The invention is illustrated in the preferred embodiment in theaccompanying drawing, in which- Figure 1 represents a broken view of awall provided with a door-opening equipped with a lire curtain andhousing therefor having my improvement applied thereto; Fig. 2, a brokensection taken as indicated at line 2 of Fig. 1; and Fig. 3, a brokenperspective view illustrating the manner in which an auxiliary shutteror damper employed is connected with the lower portion of said housingadjacent the curtain-passage thereof.

In the illustrated construction, A represent-s afire-wall; B, adoor-opening provided with lateral guides B; C, a drum-housing, or hood,surmounting the door-opening; D, a drum, or roller, journaled in theends of said housing; E, a rolling shutter, or lireresisting curtain,suitably secured, as at 1, to said drum; and F, an improved shield,damper, or auxiliary shutter, connected with the lower portion of saidhousing and adapted to be moved to the passage-closing position upon adangerous rise in temperature.

rIhe guides B bounding the door-opening B of the fire-wall A may be ofany suitable construction adapted to receive the edges of thefire-curtain.

The housing C has the plain rear wall 2 and the curved front wall 3,which is extended to form the top wall 4 and lower wall 5. The wholehousing may be of integral` format-ion, being usually constructed ofsheet metal. The housing is provided at its bottom or lower wall with acurtain-passage 6 which extends longitudinally of the housing. The metalforming the rear wall 2 of the housing is extended forwardly at itslower portion, as indicated at 7, and then bent upwardly and rearwardly,as indicated at 8. The portion 7 affords a bracket or wall which extendsforwardly from the fire-wall substantially flush with the-upper end ofthe door-opening B. At the junction of the rearwardly and upwardlyinclined flange 8 and the horizontal portion 7, the metal is cut away orprovided with slots 9 (one shown), adapted to accommodate hinges 10 (oneshown). Cne leaf 11 of each hinge is secured to the member 8, and theother leaf 12 is secured to the auxiliary shutter, or damper, F. Asshown, the shutter F comprises an angle-bar having a forwardlyprojecting flange 13 which is secured to the hinges 10 and having adownwardly projecting flange 14 which normally is disposed substantiallyin the plane of the rear wall 2 of the housing. As thus described, themember F is potentially movable and adapted to move by its own weight tothe position shown in dotted lines in Fig. 2, in which position it bearsagainst one surface of the firecurtain and closes the fire-curtainpassage. rlhe device F is normally held in the position shown in fulllines in Fig. 2 by means of a fusible link 15 which has its upper endsecured to a stationary part, as to the rear wall 2 of the housing andhas its lower end secured to the flange 111 of the member F. As shown,the link is connected by means of rivets 16 and 17.

The fire-curtain is normally held in the elevated posit-ion by anysuitable means (not shown) adapted to be a'ected by a dangerous rise intemperature to permit or compel the lire-curtain to move to theopeningclosing position. The link 15 is likewise adapted to be affectedby a dangerous rise in temperature, and when the link 15 is fused, willpermit the auxiliary shutter F to swing about the hinges 10, therebycarrying the lower edge of the flange 111 into engagement with the rearsurface of the lire-curtain E. It is obvious that when this operationoccurs, the curtain-passage is effectually closed against the passa-geof flame through the housing about the drum.

The construction described is exceedingly simple, is very durable, andsubject to very small danger of getting-out of order. Moreover, thedevice is externally located with reference to the housing, and is inposition to be viewed daily, so that in case of its being out of order,the defect would be likely to be noticed. In addition to this, it may besometimes advisable to remove one of the rivets connected with thefuse-link l5 and work the member F on its hinges in order to make surethat the action of the device is in no wise impeded by rust or fromother cause.

The foregoing detailed description has been given for clearness ofunderstanding only, and no undue limitation should he understoodtherefrom, but the appended claims should be construed as broadly aspermissible in view of the. prior art.

lNhat I regard as new, and desire to secure by Letters Patent., is`

1.' In means of the character set forth, the combination with alire-wall provided with an opening, of a housing mounted at one side ofsaid wall above said opening, said housing having its rear wall providedat its lower port-ion with an inwardly projecting flange and saidhousing having a re-curtain passage in front of said flange, an angleform shutter having a downwardly turned flange and having also aforwardly projecting flange pivotally connected with said iirst-namedflange adjacent the curtainpassage, a fusible link attached at one endto the downwardly extending flange of the shutter and at the other endto the rear wall of the housing, whereby said shutter is normallyrestrained from moving to the closing posit-ion,a roll mounted in saidhousing, and a fire-curtain connected with said roll and extendingthrough said curtain-passage.

2. In means of the character set forth, the combination with a lire-wallprovided with an opening, of a housing mounted at one side of said wallabove said opening, said housing having its rear wall provided at itslower portion with an inwardly projecting flange and having an upwardlyand rearwardly inclined {ian-ge carried thereby, and said housing havinga fire-curtain passage in front of said iianges, an angle-form shut` terhaving a downwardly projecting flange and having also a forwardlyprojecting flange, hinges connected with thev last-named flange of saidhousing and with the forwardly projecting flange of said shutter, afusible link attached at one end to theV downwardly extending flange ofthe shutter and at the other end to the rear wall of the housing,whereby said shutter is normally restrained from moving to the closingposition, a roll mounted in said housing, and a fire-curtain connectedwith said roll and eX- tending through said curtain-passage.

THOMAS E. COLLINS.

In presence of L. HnIsLAR, J. G. ANDERSON.

M Copies oi this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, D. C.

